| 摘要 |
An automatic gas inflation type head shock absorbing device effectively operating due to urgent physical event as a rider protective device for motorcycle, drop protective device for aerial worker, and sports goods so as to absorb a shock against a head part and a neck portion of a user, wherein an expansion gas chamber made of transparent material in double construction and foldably stored in a ring-shaped expansion gas chamber case functioning, at the time of operation, as a shock absorbing mechanism is given a construction forming a two-step shock absorbing device using an internal pressure difference between inside and outside chambers produced due to a difference between a filled gas pressure and the atmospheric pressure by two chambers, i.e., the outside chamber inflated by filling gas and the inside chamber inflated by the suction of the atmospheric air and a counterflow prevention valve and, because a flexible gas line provided in the inflating gas chamber as a mechanism mandatory for a gas filling device at the time of inflation is formed integrally with a starter key and a function to disengage after inflation of the inflating gas chamber, the simple but automatic and assured start of a start device, gas filling, inflation of the inflating chamber, and disengaging operations from the start device and a gas cylinder part function effectively in order. |
